<template>
  <div class="login_container">
    <div class="login_box">
      <!-- 头像区域 -->
      <div class="avatar_box">
        <img src="../assets/logo.png" alt="">
      </div>
      <!-- 登录表单区域 -->
      <el-form ref="userInfo" label-width="100px" class="login_form" :model="userInfo" :rules="rules">
        <!-- 用户名 -->
        <el-form-item prop="username" label="用户名">
          <el-input prefix-icon="el-icon-user" v-model="userInfo.username"></el-input>
        </el-form-item>
        <!-- 密码 -->
        <el-form-item prop="password" label="密码">
          <el-input prefix-icon="el-icon-info" placeholder="请输入密码" show-password v-model="userInfo.password"></el-input>
        </el-form-item>
        <!-- 按钮区域 -->
        <el-form-item class="btns">
          <el-button type="primary" @click="login('userInfo')">登录</el-button>
          <el-button type="info" @click="resetLoginForm('userInfo')">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>

  export default {
    name: 'Login',
    data() {
      return {
        userInfo: {
          username: 'root',
          password: 'root'
        },
        rules: {
          //验证用户名是否合法
          username: [
            { required: true, message: '请输入活动名称', trigger: 'blur' },
            { min: 4, max: 20, message: '长度在 4 到 20 个字符', trigger: 'blur' }
          ],
          //验证密码是否合法
          password: [
            { required: true, message: '请输入登录密码', trigger: 'blur' },
            { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
          ]
        }
      }
    },
    methods: {
      resetLoginForm(userInfo) {
        this.$refs[userInfo].resetFields()
      },
      login(userInfo) {
        this.$refs[userInfo].validate(async (valid) => {
          if (valid) {
            // alert('submit!');
            await this.$http.post('user/login', this.userInfo).then(res => {
              const { success, data, message, code } = res.data
              if (success) {
                const { token } = data
                console.log('登录成功！' + token)
                window.sessionStorage.setItem('token', token)
                this.$message.success(message)
                this.$router.push('/home')
              } else {
                console.log('登录失败！')
                this.$message.error(message)
              }
            }).catch(error => {
              console.log('登录失败！')
            })
          } else {
            console.log('error submit!!')
            return false
          }
        })
      }
    }
  }
</script>

<style lang="less" scoped>
  .login_container {
    background: #2b4b6b;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
  }

  .login_box {
    width: 450px;
    height: 300px;
    background-color: #fff;
    border-radius: 3px;

    .avatar_box {
      height: 130px;
      width: 130px;
      border: 1px solid #eee;
      border-radius: 50%;
      padding: 10px;
      box-shadow: 0 0 10px #ddd;
      position: absolute;
      left: 50%;
      transform: translate(-50%, -50%);
      background-color: #fff;

      img {
        width: 100%;
        height: 100%;
        border-radius: 50%;
        background-color: #eee;
      }
    }
  }

  .login_form {
    position: absolute;
    bottom: 38%;
    margin-left: 50px;
  }

  .btns {
    display: flex;
    justify-content: flex-end;
  }
</style>
